Interesting points, and a lot of case law, in this document. I generally despise company-generated-academic research, but this one I'll give a pass, as it actually impacts a fundamental aspect of the Internet, not just Google.

"The document, which was commissioned by Google, also serves as a kind of template for legal arguments Google might make in a US antitrust case. The release of this paper is no doubt designed to “remind” Congress and the FTC that this law exists and that Google would potentially win an antitrust case on these grounds."﻿